// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/test/ppapi_unittest.h"

#include <stdint.h>

#include "base/message_loop/message_loop.h"
#include "content/renderer/pepper/gfx_conversion.h"
#include "content/renderer/pepper/host_globals.h"
#include "content/renderer/pepper/pepper_plugin_instance_impl.h"
#include "content/renderer/pepper/plugin_module.h"
#include "content/renderer/pepper/renderer_ppapi_host_impl.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppp_instance.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/ppapi_permissions.h"

namespace content {

namespace {

    PpapiUnittest* current_unittest = NULL;

    const void* MockGetInterface(const char* interface_name)
    {
        return current_unittest->GetMockInterface(interface_name);
    }

    int MockInitializeModule(PP_Module, PPB_GetInterface)
    {
        return PP_OK;
    }

    // PPP_Instance implementation ------------------------------------------------

    PP_Bool Instance_DidCreate(PP_Instance pp_instance,
        uint32_t argc,
        const char* argn[],
        const char* argv[])
    {
        return PP_TRUE;
    }

    void Instance_DidDestroy(PP_Instance instance)
    {
    }

    void Instance_DidChangeView(PP_Instance pp_instance, PP_Resource view)
    {
    }

    void Instance_DidChangeFocus(PP_Instance pp_instance, PP_Bool has_focus)
    {
    }

    PP_Bool Instance_HandleDocumentLoad(PP_Instance pp_instance,
        PP_Resource pp_url_loader)
    {
        return PP_FALSE;
    }

    static PPP_Instance mock_instance_interface = {
        &Instance_DidCreate,
        &Instance_DidDestroy,
        &Instance_DidChangeView,
        &Instance_DidChangeFocus,
        &Instance_HandleDocumentLoad
    };

} // namespace

// PpapiUnittest --------------------------------------------------------------

PpapiUnittest::PpapiUnittest()
{
    DCHECK(!current_unittest);
    current_unittest = this;
}

PpapiUnittest::~PpapiUnittest()
{
    DCHECK(current_unittest == this);
    current_unittest = NULL;
}

void PpapiUnittest::SetUp()
{
    message_loop_.reset(new base::MessageLoop());

    // Initialize the mock module.
    ppapi::PpapiPermissions perms;
    module_ = new PluginModule("Mock plugin", "1.0", base::FilePath(),
        perms);
    ppapi::PpapiGlobals::Get()->ResetMainThreadMessageLoopForTesting();
    PepperPluginInfo::EntryPoints entry_points;
    entry_points.get_interface = &MockGetInterface;
    entry_points.initialize_module = &MockInitializeModule;
    ASSERT_TRUE(module_->InitAsInternalPlugin(entry_points));

    // Initialize renderer ppapi host.
    CHECK(RendererPpapiHostImpl::CreateOnModuleForInProcess(module(), perms));
    CHECK(module_->renderer_ppapi_host());

    // Initialize the mock instance.
    instance_ = PepperPluginInstanceImpl::Create(NULL, module(), NULL, GURL());
}

void PpapiUnittest::TearDown()
{
    instance_ = NULL;
    module_ = NULL;
    message_loop_.reset();
    PluginModule::ResetHostGlobalsForTest();
}

const void* PpapiUnittest::GetMockInterface(const char* interface_name) const
{
    if (strcmp(interface_name, PPP_INSTANCE_INTERFACE_1_0) == 0)
        return &mock_instance_interface;
    return NULL;
}

void PpapiUnittest::ShutdownModule()
{
    DCHECK(instance_->HasOneRef());
    instance_ = NULL;
    DCHECK(module_->HasOneRef());
    module_ = NULL;
}

void PpapiUnittest::SetViewSize(int width, int height) const
{
    instance_->view_data_.rect = PP_FromGfxRect(gfx::Rect(0, 0, width, height));
    instance_->view_data_.clip_rect = instance_->view_data_.rect;
}

} // namespace content
